Ultra-red therpeutic pad



G. 8. WHITE ULTRA RED THERAPEUTIC PAD June 15 1926 Filed Nov. 12. 1923 Ulz'ra E59 Ray E7561 INVENTOR.

A TTORNEYS Patented June 1926.

\UNITED STATES .TENTT' cries enoaea sman WHITE, or LOS enemas, camroanm.

ULTRA-RED THERAPEUTIOPA D.

application filed November 12, 1923. Serial No. 674,187.

This invention relates to an appliance adapted tobe held against the body of a subj ect, wherein ultra-red or infra-red rays are generated and passed through a screen which occludes all of the visible rays of the spectrum and substantially-all theultra-violet rays. The ap liance comprises the combination of an u tra-red ray generator and a I p cov'ering sheet adapted to be so positioned that it-may be interposed between the generator and the body of the subject. Prefer- I ably the appliance is flexible so thatit adapts itself tothe contour of any part of the body.

Scientific investigation hasproved that ultra-red rays penetrate deeply into the body and are therein converted into heat.

This heat has the property of stimulating the vascular system, thereby serving as a remedial agency. Ultra-violet .rays ,and

some of the visiblerays'of the spectrum have a surface'eifect and irritate the skin. Where ultra-red rays' are desirable, the irritant rays should be occluded or screened from the body in orderthat prolonged or intensive. application of the rays may be resorted to" without detrimental effect to the the body.

surface of .To this end, I have herein disclosedan .em bodiment of my invention, best understood by reference to the accompanying. drawing,

wherein'the-figure 1s a perspective view of a padconstructed in accordance with my invention. P

There are a great variety of ultrared rays,

and these are produced by heating certain substances. emitted increas ngly as soon as the substance.

The ultra-red rays begin to be begins to heat.- The augmentation continues for only a short timewhen' the rays begin to decline raplidly until almost none at all are detected, t

ultra-red rays are produced best'before the substances reach a temperature suificient to emit visible rays. Black iron, will for example produce a difierent"ultra-red .ray

when heated to 200 Fahrenheit than galvanized iron heated to an equal temperature. Brass wireheated to about 300 Fahrenheit emits a ray thatis very different from that glven off from copper wire similarly treated.

oft red rubber emits aray different in many respects from that given off from soft black rubber, when heated to, 180 Fahrenheit.

Ebonite emits a ray that is not like that given of! from black hard rubber when en as the substance coolsofi the. "rays become more powerful. In general the heated to 200 Fahrenheit. Zinc emits a ray that is not like that given off from aluminum when heated to about 200 Fahrenheit.

My invention contemplates the use of, an

element heated by the passage of an electrical current. Thus, awire of bronze or other suitable metal or alloy is wound in convolutions in the manner usual in building electrical heating elements for pads. Such an element is indicated in the drawing by 1. The, cord for connecting the generator .to a

A control switch 3 is' inter osed in the cord circuit between the pad an a plug 4. Cov-' ering the generator is a fabric 5 which serves sourceof electrical energy is indicated by 2.

as afilter or screen through which the ultrared rays may pass freely. It hasbeen found by experlment that the permeability of the screen to any-selected ultra-red ray depends upon 'a-n'umber of factors, such as the ma:-

terial of which the screen is made, its weave and its color. For illustration, the same kind of material, of. the same texture and 4 colored respectively green, blue indigo, and violet impedes the ultra-red rays in the order of the colors just given. Yellow, orange,

and red are good conductors or transmitters readily than woolen fabrics. Artificial I leather transmits ultra-red much more readily than the real leather. Celluloid is more ermeable to the ultra-red rays than ivory, orn or-bone. Certain combinations of colors and of fabrics enhance the passing of ultra-red, while other combinations impede their transmission. For this reason, the material-selected would be dependent upon the character of the rays that it was desired, to transmit. The characteristic in common would be that the screen should bepermeable to the vultra-red rays and occlude the remaining rays of the s ectrum. -,The'

clinical effect of the rays can e determined by experiment and a proper pad made.

What I claim is: 1. In a therapeutic pad, the combination of a generator of rays of the s ectrum including ultra-red rays in prepon ammo and a covering sheet to be interposed between ponderance, and an envelope of cushion ma- 10 said generator and the body of the subject, terial comprising a screen permeable to said covering sheet being permeable to ultra ultra-red rays and being an occlusor of the 'red rays and an occlusor of the remaining remaining rays of the spectrum which are rays of the spectrum which are irritant to irritant to the skin.

the skin. In witness that I claim the foregoing I 1 2. In a therapeutic pad, the combination have hereunto subscribed my name this 24th of a flexible pad like generator of rays of the day of October, 1923.

spectrum including ultra-red rays in pre- GEORGE'STARR WHITE. 

